US9116312B2 - Lens element and optical communication apparatus with same - Google Patents

Lens element and optical communication apparatus with same Download PDF

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Publication number
US9116312B2
US9116312B2 US13/861,393 US201313861393A US9116312B2 US 9116312 B2 US9116312 B2 US 9116312B2 US 201313861393 A US201313861393 A US 201313861393A US 9116312 B2 US9116312 B2 US 9116312B2
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US
United States
Prior art keywords
optical
main body
groove
light
light splitting
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US13/861,393
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English (en)
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US20140056564A1 (en
Inventor
I-Thun Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hon Hai Precision Industry Co Ltd
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Hon Hai Precision Industry Co Ltd
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Assigned to HON HAI PRECISION INDUSTRY CO., LTD. reassignment HON HAI PRECISION INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIN, I-THUN
Publication of US20140056564A1 publication Critical patent/US20140056564A1/en
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/4228—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements
    • G02B6/423—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements using guiding surfaces for the alignment
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/4236—Fixing or mounting methods of the aligned elements
    • G02B6/4244—Mounting of the optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4246—Bidirectionally operating package structures
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/4236—Fixing or mounting methods of the aligned elements
    • G02B6/424—Mounting of the optical light guide
    • G02B6/4243—Mounting of the optical light guide into a groove
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4274—Electrical aspects
    • G02B6/428—Electrical aspects containing printed circuit boards [PCB]

Definitions

  • the present disclosure relates to lens elements and optical communication apparatuses and, particularly, to an optical lens and optical communication apparatus with optical signal feedback function.
  • Optical communication apparatus generally include an emitter for emitting light, an optical fiber for transmitting the light, and a lens element for optically coupling the light between the emitter and the optical fiber.
  • the light from the emitter is directly sent to the optical fiber and therefore cannot be measured for intensity and stability. As such, communication quality may be adversely affected when the light does not qualify and cannot be detected.
  • FIG. 1 is an exploded view of an optical communication apparatus, according to an exemplary embodiment of the present disclosure, wherein the optical communication apparatus includes a lens element.
  • FIG. 2 is an isometric view of the lens element of the optical communication apparatus of FIG. 1 , viewing from another angle different from FIG. 1 .
  • FIG. 3 is an assembled view of the optical apparatus of FIG. 1 .
  • FIG. 4 is a cross-sectional view of the optical apparatus of FIG. 3 , taken along line IV-IV.
  • FIGS. 1-4 show an optical communication apparatus 100 according to an exemplary embodiment.
  • the optical communication apparatus 100 includes a printed circuit board (PCB) 10 , two optical emitters 20 , two optical receivers 30 , two optical detectors 40 corresponding to the optical emitters 20 , a lens element 50 , two output optical fibers 60 corresponding to the optical emitters 20 , and two input optical fibers 70 corresponding to the optical receivers 30 .
  • PCB printed circuit board
  • the PCB 10 includes a mounting surface 11 for mounting the optical emitters 20 , the optical receivers 30 , and the optical detectors 40 thereon.
  • the PCB 10 further includes one or more printed circuits (not shown) for transmitting electrical signals and providing electrical power for the optical emitters 20 , the optical receivers 30 , and the optical detectors 40 .
  • the optical emitters 20 , the optical receivers 30 , and the optical detectors 40 are electrically connected to the PCB 10 .
  • the optical emitters 20 and the optical receivers 30 are arranged along a first linear direction, the optical detectors 40 are arranged along a second linear direction substantially parallel to the first linear direction, and each optical detector 40 is aligned with a corresponding optical emitter 20 along a direction substantially perpendicular to the first and second linear directions.
  • the optical emitters 20 are configured for emitting light representing predetermined optical signals.
  • the optical receivers 30 are configured for receiving light from the input optical fibers 70 .
  • Each of optical detectors 40 is configured for detecting the optical signals emitted from a corresponding optical emitter 20 and transmitting a detecting result to the corresponding optical emitter 20 .
  • the lens element 50 is positioned on the mounting surface 11 and covers the optical emitters 20 , the optical receivers 30 , and the optical detectors 40 .
  • the lens element 50 is configured for coupling optical signals between the optical emitters 20 and the output optical fibers 60 , and coupling optical signals between the optical receivers 30 and the input optical fibers 70 .
  • the lens element 50 includes a main body 51 , a number of first lens portions 52 , a number of second lens portions 53 , and a light splitting member 54 .
  • the main body 51 is substantially rectangular-shaped.
  • the main body 51 includes a first end surface 511 , a second end surface 512 opposite to the first end surface 511 , a bottom surface 513 , and a top surface 514 opposite to the bottom surface 513 .
  • the main body 51 defines a first groove 501 , a second groove 502 , and a third groove 503 .
  • the first groove 501 passes through the top surface 514 and the first end surface 511 .
  • the first groove 501 forms a first surface 51 a and a second surface 51 b in the main body 51 .
  • the first surface 51 a is substantially parallel to the bottom surface 413
  • the second surface 51 b is substantially parallel to the first end surface 511 .
  • the main body 51 includes a protrusion 515 upwardly protruding from the first surface 51 a .
  • the protrusion 515 defines a number of positioning grooves 5151 for receiving both the input optical fibers 60 and the output optical fibers 70 .
  • the second groove 502 and the third groove 503 are defined in the top surface of the main body 51 , and the second groove 502 is located between the first groove 501 and the third groove 503 .
  • the second groove 502 is positioned over the optical detectors 40 along the second linear direction. The length of the second groove 502 is not less than a distance between the optical detectors 40 .
  • the second groove 502 forms two opposite positioning surfaces 51 c and a first inclined surface 51 d connected between the positioning surfaces 51 c .
  • Each positioning surface 51 c defines an engaging groove 516 .
  • the first inclined surface 51 d is adjacent to the third groove 503 , and an included angle between the first inclined surface 51 d and the bottom surface 513 is substantial 45 degrees.
  • the third groove 503 forms a second inclined surface 51 e in the main body 51 .
  • the second inclined surface 51 e is substantially perpendicular to the first inclined surface 51 d .
  • An included angle between the second inclined surface 51 e and the bottom surface 513 is substantial 45 degrees.
  • the main body 51 further includes a supporting portion 5131 protruding from the bottom surface 513 .
  • the first lens portions 52 are formed on the second surface 51 b , and each first lens portion 52 is optically aligned with a corresponding one of the output optical fibers 60 and the input optical fibers 70 .
  • the second lens portions 53 are formed on the bottom surface 513 , and each second lens portion 53 is optically aligned with a corresponding one of the optical emitters 20 , the optical receivers 30 , and the optical detector 40 .
  • the first lens portions 52 and the second lens portions 53 are convex lenses, and the first lens portions 52 and the second lens portions 53 are integrally formed with the main body 51 .
  • An optical axis of each first lens portion 52 is substantially parallel to the bottom surface 513
  • an optical axis of each second lens portion 53 is substantially perpendicular to the bottom surface 513 .
  • the optical axis of each of the second lens portions 53 which are corresponding to the optical detectors 40 is intersected with the optical axis of a corresponding first lens portion 52 at the first inclined surface 51 d .
  • the optical axis of each of the second lens portions 52 which are corresponding to the optical emitters 20 is intersected with the optical axis of a corresponding first lens portion 53 at the second inclined surface 51 e.
  • the light splitting member 54 is substantially shaped accommodating to a shape of the second groove 502 .
  • the light splitting member 54 includes a light splitting surface 541 and a light splitting film 542 coated on the light splitting surface 541 .
  • the light splitting film 542 reflects a portion incident light and allows the other portion of the light to pass therethrough. A ratio of the reflected light and the passing light can be adjusted by changing the material of the light splitting film 542 according to different requirements.
  • the light splitting member 54 includes two engaging blocks 543 respectively protruding from two opposite ends of the light splitting member 54 .
  • the light splitting member 54 is received in the second groove 52 , the light splitting surface 541 overlaps the first inclined surface 51 d , and the engaging blocks 543 are engaged into the engaging grooves 516 , respectively.
  • the main body 51 is positioned on the PCB 10 and covers the optical emitters 20 , the optical receivers 30 , and the optical detectors 40 .
  • the supporting portion 5131 supports the main body 51 on the PCB.
  • the second lens portions 53 each optically aligned with a corresponding one of the optical emitters 20 , the optical receivers 30 , and the optical detector 40 .
  • the output optical fibers 60 and the input optical fibers 70 are fixed in the corresponding positioning grooves 5151 , and each of the output optical fibers 60 and the input optical fibers 70 is optically aligned with a corresponding one of the first lens portions 52 .
  • each optical emitter 20 converts electrical signals into corresponding optical signals and emits light representing the optical signals to a corresponding second lens portion 53 ; the second lens portion 53 converges the light into a substantially parallel light beam and directs the parallel light beam to the second inclined surface 51 e .
  • the second inclined surface 51 e reflects the parallel light beam to the first inclined surface 51 d and the light splitting member 54 .
  • the light splitting member 54 splits the light beam into two split light beams, one of the split light beams passes through the light splitting film 542 and reaches a corresponding first lens portion 52 and then transmits into a corresponding output optical fiber 60 , and the other of the split light beam is reflected to a corresponding second lens portion 53 , passes through the second lens portion 53 , and then projects on a corresponding optical detector 40 ; the optical detector 40 receives the other split light beam, detects an intensity and stability of the light according to the other split light beam, and transmits a detecting result to the corresponding optical emitter 20 ; the corresponding optical emitter 10 adjusts the emitted light according to the detecting result. Therefore, parameters of the emitted light can be timely detected by the optical detector 40 , and the performance of the optical communication apparatus 100 is ensured.
  • the number of the optical emitters 20 , the optical receivers 30 , the optical detectors 40 , the output optical fibers 60 or the input optical fibers 70 are two.
  • the number of the optical emitters 20 , the optical receivers 30 , the optical detectors 40 , the output optical fibers 60 or the input optical fibers 70 can be changed according to different requirements.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
US13/861,393 2012-08-21 2013-04-12 Lens element and optical communication apparatus with same Expired - Fee Related US9116312B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TW101130208 2012-08-21
TW101130208A TW201409101A (zh) 2012-08-21 2012-08-21 光纖耦合透鏡及光纖連接器
TW101130208A 2012-08-21

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US20140056564A1 US20140056564A1 (en) 2014-02-27
US9116312B2 true US9116312B2 (en) 2015-08-25

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TW (1) TW201409101A (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150293316A1 (en) * 2014-04-11 2015-10-15 Suzhou Innolight Technology Corporation Optical assembly
US20160004020A1 (en) * 2013-04-19 2016-01-07 Avago Technologies General Ip (Singapore) Pte. Ltd. Bidirectional optical communications module having an optics system that reduces optical losses and increases tolerance to optical misalignment
US20180031790A1 (en) * 2016-07-27 2018-02-01 Truelight Corporation Optical couping module and optical communication apparatus using the same
US9927586B1 (en) 2017-03-20 2018-03-27 Sae Magnetics (H.K.) Ltd. Two-part optical coupling subassembly for monitoring optical output power in optical transceiver
US20220283389A1 (en) * 2019-11-25 2022-09-08 Hisense Broadband Multimedia Technologies Co., Ltd. Optical module

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI616692B (zh) * 2014-12-29 2018-03-01 鴻海精密工業股份有限公司 光纖連接器及光耦合透鏡
CN108776373A (zh) * 2018-06-21 2018-11-09 青岛海信宽带多媒体技术有限公司 光模块
CN112904494B (zh) * 2019-12-03 2023-08-08 青岛海信宽带多媒体技术有限公司 一种光模块
CN112433300B (zh) * 2020-12-21 2023-04-18 杭州耀芯科技有限公司 一种光纤波分复用器
CN113900196B (zh) * 2021-09-30 2022-11-11 深圳市埃尔法光电科技有限公司 一种光通信装置及系统

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US6636540B2 (en) * 2001-10-30 2003-10-21 Agilent Technologies, Inc. Optical turn for monitoring light from a laser
US6888988B2 (en) * 2003-03-14 2005-05-03 Agilent Technologies, Inc. Small form factor all-polymer optical device with integrated dual beam path based on total internal reflection optical turn
US6895147B2 (en) * 2003-06-26 2005-05-17 Intel Corporation Laser power monitoring tap
US6939058B2 (en) * 2002-02-12 2005-09-06 Microalign Technologies, Inc. Optical module for high-speed bidirectional transceiver
JP2006344915A (ja) * 2005-06-10 2006-12-21 Sony Corp 光学ユニット
US7165896B2 (en) * 2004-02-12 2007-01-23 Hymite A/S Light transmitting modules with optical power monitoring
WO2011077723A1 (ja) * 2009-12-22 2011-06-30 株式会社エンプラス レンズアレイおよびこれを備えた光モジュール
US8000358B2 (en) * 2009-04-20 2011-08-16 Emcore Corporation Power monitoring system for a parallel optical transmitter
US20120193522A1 (en) * 2011-02-01 2012-08-02 Sifotonics Technologies Co., Ltd. Monolithic Optical Coupling Module Based On Total Internal Reflection Surfaces
US20120219256A1 (en) * 2010-06-30 2012-08-30 Avago Technologies Fiber Ip (Singapore) Pte. Ltd. Optical beam splitter for use in an optoelectronic module, and a method for performing optical beam splitting in an optoelectronic module
US20140314422A1 (en) * 2013-04-19 2014-10-23 Avago Technologies General Ip (Singapore) Pte. Ltd. Bidirectional parallel optical transceiver module and a method for bidirectionally communicating optical signals over an optical link

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485538A (en) * 1994-06-30 1996-01-16 The Whitaker Corporation Bidirectional wavelength division multiplex transceiver module
US6636540B2 (en) * 2001-10-30 2003-10-21 Agilent Technologies, Inc. Optical turn for monitoring light from a laser
US6939058B2 (en) * 2002-02-12 2005-09-06 Microalign Technologies, Inc. Optical module for high-speed bidirectional transceiver
US6888988B2 (en) * 2003-03-14 2005-05-03 Agilent Technologies, Inc. Small form factor all-polymer optical device with integrated dual beam path based on total internal reflection optical turn
US6895147B2 (en) * 2003-06-26 2005-05-17 Intel Corporation Laser power monitoring tap
US7165896B2 (en) * 2004-02-12 2007-01-23 Hymite A/S Light transmitting modules with optical power monitoring
JP2006344915A (ja) * 2005-06-10 2006-12-21 Sony Corp 光学ユニット
US8000358B2 (en) * 2009-04-20 2011-08-16 Emcore Corporation Power monitoring system for a parallel optical transmitter
WO2011077723A1 (ja) * 2009-12-22 2011-06-30 株式会社エンプラス レンズアレイおよびこれを備えた光モジュール
US20120263416A1 (en) * 2009-12-22 2012-10-18 Shimpei Morioka Lens array and optical module provided therewith
US20120219256A1 (en) * 2010-06-30 2012-08-30 Avago Technologies Fiber Ip (Singapore) Pte. Ltd. Optical beam splitter for use in an optoelectronic module, and a method for performing optical beam splitting in an optoelectronic module
US20120193522A1 (en) * 2011-02-01 2012-08-02 Sifotonics Technologies Co., Ltd. Monolithic Optical Coupling Module Based On Total Internal Reflection Surfaces
US20140314422A1 (en) * 2013-04-19 2014-10-23 Avago Technologies General Ip (Singapore) Pte. Ltd. Bidirectional parallel optical transceiver module and a method for bidirectionally communicating optical signals over an optical link

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160004020A1 (en) * 2013-04-19 2016-01-07 Avago Technologies General Ip (Singapore) Pte. Ltd. Bidirectional optical communications module having an optics system that reduces optical losses and increases tolerance to optical misalignment
US9323013B2 (en) * 2013-04-19 2016-04-26 Avago Technologies General Ip (Singapore) Pte. Ltd. Bidirectional optical communications module having an optics system that reduces optical losses and increases tolerance to optical misalignment
US20150293316A1 (en) * 2014-04-11 2015-10-15 Suzhou Innolight Technology Corporation Optical assembly
US9513448B2 (en) * 2014-04-11 2016-12-06 Innolight Technology (Suzhou) Ltd. Optical assembly
US20180031790A1 (en) * 2016-07-27 2018-02-01 Truelight Corporation Optical couping module and optical communication apparatus using the same
US9927586B1 (en) 2017-03-20 2018-03-27 Sae Magnetics (H.K.) Ltd. Two-part optical coupling subassembly for monitoring optical output power in optical transceiver
US20220283389A1 (en) * 2019-11-25 2022-09-08 Hisense Broadband Multimedia Technologies Co., Ltd. Optical module
US11841539B2 (en) * 2019-11-25 2023-12-12 Hisense Broadband Multimedia Technologies Co., Ltd Optical module

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US20140056564A1 (en) 2014-02-27

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